The word steganography comes from Greek steganographia, which combines the words steganós (στεγανός), meaning "covered or concealed", and -graphia (γραφή) meaning "writing". The same image viewed by white, blue, green, and red lights reveals different hidden numbers.
Invisible ink, also known as security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, ...
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A hidden message is information that is not immediately noticeable, and that must be discovered or uncovered and interpreted before it can be known.
The Codebreakers – The Story of Secret Writing ( ISBN 0-684-83130-9) is a book by David Kahn, published in 1967, comprehensively chronicling the history of ...
Cryptography, or cryptology is the practice and study of techniques for secure communication in the presence of adversarial behavior.
In the history of cryptography, a grille cipher was a technique for encrypting a plaintext by writing it onto a sheet of paper through a pierced sheet The ...
The Voynich manuscript is an illustrated codex, hand-written in an unknown script referred to as 'Voynichese.' The vellum on which it is written has been ...
In cryptology, a code is a method used to encrypt a message that operates at the level of meaning; that is, words or phrases are converted into something ...
In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a ...
Mar 7, 2024 · The Secret (Byrne book) - Wikipedia. en ... write or how to proceed with writing. ... Hard lesson learned: I think I know how to write, but I'm not ...